Vocabulary
Structure of the Earth
Plate Tectonics
Catastrophic Events 1
Catastrophic Events 2
100
The thinnest layer of the Earth
What is the crust
100

There are ______________ compositional layers of the Earth.

What is four 


Bonus: name them!

100
Earthquakes and Volcanoes are usually located in relation to these
What is a plate boundary
100

The San Andreas Fault in California is an example of a ____________________ boundary.

What is transform boundary

100

True or false, landslides can be triggered by earthquakes and volcanic eruptions 

True

200
A number of rigid, but moving, pieces of Earth's surface
What is tectonic plates.
200
The thickest layer of the Earth
What is the mantle.
200
The mid-ocean ridge is an example of a ____________________ boundary and ___________________ occurs here where new ocean floor is formed.
What is divergent boundary; sea-floor spreading
200

When lava and gas are released from a volcano

What is Volcanic Eruption

200

The causes of a tsunami

What is an earthquake or underwater volcanic eruption. 

If an earthquake lifts or drops part of the ocean floor, the water above rises and starts spreading across the ocean, causing a tsunami.

300
The theory that all continents are fragments of Pangaea now drifting apart
What is the Continental Drift Theory
300
Plates float on top of the _______________________.
What is the asthenosphere
300

The Himalayan mountains are the result of a ___________________________ boundary.

Convergent boundary

300

Mass movements of rock, debris, and soil down a slope of land

What is landslide

300

_________________ are a result from the build up of stress at a plate boundary.

What is earthquake

400
States that youngest rocks of ocean floor are at divergin boundaries, moving outward
What is seafloor spreading
400
The rigid part of the Earth including the crust and the upper mantle (makes up the plates of the Earth)
What is the lithosphere
400
This is the mechanism (what causes) the plates to move
What is convection cycles in the mantle
400

The reason magma rises to the surface

What is magma is less dense than rock

400

What is the science word for pushing water out of the way and taking its place?

What is displace

500
Although the hottest layer of the Earth, this layer is solid metal
What is the inner core
500
The Earth's crust is thinnest under the _____________________ and thickest under the _____________________.
What is thinnest under the ocean and thickest under the continents.
500
The two types of convergent boundaries
What is subduction (where volcanoes often occur) and collision (where mountains are usually formed)
500

The machine that studies earthquakes

What is a Seismograph

500

Where the largest tsunami ever recorded took place

What is Lituya Bay, Alaska

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